Ophthalmic mounting



June 1 1926;

w. c. EATON OPHTHALMIC MOUNTING Filed July 2.5. 1923 INVENTOR WILL/AM C.EATON A oRNEY Patented June 1, 1926.

UNITE STATES PATENT OFFHQ.

WILLIAM C. EATON, OF SOUTHBRIDGE, MASSACHUSETTS, ASSIGNOR TO AMERICANOPTICAL COMPANY, OF SOUTI-IBRIDGE, MASSACHUSETTS, A VOLUNTARY ASSOCIA-TION OF MASSACHUSETTS.

OPHTHALMIC MOUNTING.

Application filed July 23, 1923.

This invention relates to improvements in ophthalmic mountings, and hasparticular reference to an improved mounting of the fingerpiece typewhich is retained on the face by spring actuated levers pivoted to asuitable lens connecting member or support.

The leading object of this invention is the provision of an improvedmounting of this-character in which breakage and deterioration willalmost be entirely obviated.

I-Ieretofore rimless eyeglasses have been in demand by the majority ofusers in preference to eyeglasses with rims, chiefly because of theconspicuous and ungainly appearance of the old rims having largeclamping portions carried thereby and extending inwardly of the rim onboth sides of the lenses and taking up a comparatively large portionthereof. Furthermore, in View of the form of joint used the rims oftentimes became twisted from their nor mal shape, thus presenting a poorappear ance and increasing the chance of losing the lens at the sametime. In addition to this, the rimless eyeglasses were not entirelysatisfactory as it was difficult to properly mount the bridges and nosepieces.

An object of my invention is to overcome the objections above set forthand to provide an eyeglass having a metallic inner rim and anon-metallic outer rim composed of a. cellulose composition, such aszylonite. Lug portions are disposed rearwardly of and formed integralwith the rim and the bridge so that there is absolutely no possibilityof displacement of the various parts of the eyeglass.

A still further object of my invention is to provide a device of thischaracter that is strong, durable, comparatively simple and inexpensivein construction and that is well adapted to the use for which it isdesired.

Other objects and advantages of the invention will become apparentduring the course of the following description.

In the drawings, wherein like numerals are employed to designate likeparts throughout the same,

Figure 1 is a fragmentary rear elevation of my improved mounting.

Figure 2 is a fragmentary detail perspective of the oint used inaccordance with my invention and in an open position.

Serial No. 653,222.

outer rim 12 which is composed of a preferably cellulose composition,such as zylonite. The inner rim 11 is a split rim and is provided withrearwardly disposed lugs 13 desi gnated in their entirety by the numeral13. The lug portions 13 are provided with aligning screw-threadedopenings through which a screw 14 is adapted to pass to clamp the rimabout a lens. It will thus be seen that due to the V-shaped joint andthe screw l l it will be absolutely impossible for the rims to move orbecome displaced even to the slightest degree. It is to be particularlynoted that the lug portions are formed integral with the metallic rim 11in such a manner that the connection therebetween is decidedly strongerthan the ordinary form now in use.

It will be noted, as shown in Figures 2, 3 and 5, that the rim 11, andthe lugs 13 are divided in a joint, but not in a straight line, thejoint. being substantially V-shaped, formed by the intersection of twooblique lines, the lines of the joint descending from the outside edgesof the rim and the lug to an intermediate point where they intersect.This provides a joint that will tend to keep the frame sections inalignment and free from lateral displacement when the two sections ofthe lug are drawn together by the screw fastening 14:. The advantage ofthis construction is that it provides a strong joint for the framesections free from lateral displacement, which joint is very accessibleto be opened up to allow the insertion of a lens in the rim withoutinterfering in any way with the guard and guard lever of the mechanismfor holding the frame on the nose; the joint also being on the inside ispractically invisible when the mounting is in service. The joint may beopened up to insert a lens in the rim without interfering with themechanism for holding the mounting on the nose, or the holding mechanismmay be taken off and put on without interfering with the lens in theframe. It also provides a unitary construction for carry ing themechanism for holding the mounting on the face and for separation of therim to allow the insertion or taking out of a lens.

At 15 is indicated the bridge, which is provided with the enlargedsubstantially squarehaped terminal portions 10 which are formed integralwith the upper portion of the lug 13. The enlarged portion 16 isdisposed in a plane parallel with the longitudinal axis drawn throughboth lenses of the glass and is provided with an upstanding collar 17upon which is mounted the nose piece for pivotal movement thereon. Thenose pieces 18 may be of any desired construction and a form thereof isclearly illus trated in Figure 1. In the illustration as shown a sleevecarried by the nose pieces is slipped over the collar 17 and a spring 19and screw 20 are brought into play, whereby the nose pieces 18 will bebrought into engagement with the nose of the user in the manner as willbe readily understood.

It is to be noted in Figure 5 of the drawings that the outer rim 12 atthe point 21 is so disposed that it is absolutely in'ipossible for thescrew 1a to become dislodged and lost. In other words, the head of thecrew 1% will abut the end of the outer riin 21, whereby its downwardmotion will he restricted.

It will thus be seen that I have devised an eyeglass having attractiverims which are exceedingly substantial, which are provided withrearwardly disposed lug portions, which are formed integral with the rimand the nose piece so that there are no parts pro vided which willgradually work loose and allow the lens to become lost. In other words,the rims, lug portions and bridge are all formed of an integralstructure the bridge having an enlarged portion forming a good bearingsurface for the nose pieces to work upon.

It is to be understood that the form of my invention herewith shown anddescribed is to be taken as the preferred embodiment of the same, andthat various changes in the shape, size and arrangement of parts may beresorted to Without departing from the spirit of my invention or thescope of the sub-joining claims.

Having thus described my invention, what I claim as new is:

1. In a device of the character described, a split lens rim havingabutting ends, said line of abutment being inclined to the sides of therim, a lug on the eye side of the rim extending from one of the ends ofthe rim, the top of said lug having an inclined face making an acuteangle with the line of abutment of the end of the rim, a bridge memberjoined to the other end of the rim above the line of abutment and havingan extending lug aligned with the lug on the other end of the rim andhaving a face contacting with the inclined face of the first lug, andmeans for securing the two lugs together.

2. In a device of the character described, a split lens rim havingabutting ends, said line of abutment being inclined to the sides of therim, a lug on the eye side of the rim extending from one of the ends ofthe rim, the top of said lug having an inclined face making an acuteangle with the line of abutment of the end of the rim, a bridge memberjoined to the other end of the rim above the line of abutment and havingan extending lug aligned with the lug on the other end of the rim, andhaving a face contact ing with the inclined face of the first lug, meansfor securing the two lugs together, a pivot post 011 the bridge adjacentits attachment to the rim, and a guard lever pivoted on the pivot post.

WILLIAM C. EATON.

